Therefore, stiffness coefficient
was calculated using force arising at 5 mm footplates deflection in case of heel stiffness measurements and 10 mm deflection with the measurements of toe end overall and local stiffness.
tr] which denote certain parameters are expressed as seat mass, seat stiffness coefficient
, seat damping coefficient, sprung mass, front tire mass, rear tire mass, front suspension position in relation to the center of mass, rear suspension position in relation to the center of mass, seat position in relation to the center of mass, front tire stiffness coefficient
and rear tire stiffness coefficient
Spring stiffness coefficient
K corresponds to resilience of the compressible medium in the connected supply tank.
The initial conditions of the optimization model are the maximum of the difference function of the dynamic stiffness coefficient
, the wave amplitude attenuation, and the maximum finite element number.
Eq]--an equivalent stiffness coefficient
of the gear, reduced to its output shaft; [T.
Deformation of the component depends on the stiffness coefficient
of the component and force in the component (Weynand et al.
The stiffness coefficient
is defined as the negative derivative of forces with respect to the displacement .
According to the suggested model (22), having calculated the required general connection stiffness coefficient
[lambda], from the Eq (8) the characteristic of the shear stiffness of connection is calculated:
However, direct comparisons are difficult because of the notable difference between their studies and this work, which was the use of the stiffness coefficient
that involves density rather than the use of velocity alone.
where k stands for equivalent spring stiffness coefficient
, [epsilon] stands for effective dielectric permittivity of the gap between the electrodes, A is the effective area of the electrodes.
The long axis of the prosthetic foot was oriented parallel to a near-frictionless plate (achieved using a ball bearing interface), and the "ball" of the prosthetic foot was loaded by a force perpendicular to the plate to simulate late stance and thereby estimate the stiffness coefficient
of a Voigt model from the measured static force-displacement relationship.
d[phi]/dt, t is time, m is mass, L is the length of the pendulum, [mu] is the gravitation constant, b is the linear damping coefficient, c is the linear stiffness coefficient